Frequencies for first 10,000 rows of paytype variable in nhamcsed2000 dataset :

 primary expected |
source of payment |
   for this visit |      Freq.     Percent        Cum.
------------------+-----------------------------------
Private insurance |      3,899       38.99       38.99
         Medicare |      1,227       12.27       51.26
         Medicaid |      1,725       17.25       68.51
                4 |        254        2.54       71.05
         Self-pay |      1,762       17.62       88.67
        No charge |         24        0.24       88.91
            Other |        313        3.13       92.04
          Unknown |        721        7.21       99.25
            Blank |         75        0.75      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016